- Back panel
1) Power supply connector for wide range supply: 110 / 230 Volts, 50 / 60 Hz autoranging.
2) Fuse F1, see technical specifications for selection guide of fuse F1
3) User port D-Sub 15 pole
4) RS232 - interface for remote control of the NSG 4070 using a null modem connection
5) Input for optical EUT Monitoring, Fiber optic cable plug, HP versatile link HFBR0501 series 40 kBd
6) Optical RS232 - interface for remote control of the NSG 4070 using USO 4013
7) Network connector 10 / 100 Ethernet
USB device connector
9) USB host connector
10) Fans for cooling the internal parts of the unit
11) BNC sockets
a) Monitoring input analog, BNC socket, 0-24 V Ri=15 kΩ, 6 mV resolution
b) Monitoring digital input, BNC socket, 0-24 V via optical coupler Ri=1.5 kΩ, switching threshold approx. 2 to 3 V
c) External modulation input, BNC socket, Impedance >10 kΩ, Level: 1 Vpp / 100% AM: 1 Hz – 50 kHz
d) 10 MHz reference output, BNC socket, approx. 1 Vpp / 50 Ω. Please note: The connected signal will be mixed with
the selected internal modulation. Disconnect this port for using the internal modulation only.
e) Trigger input, BNC socket, TTL for external triggering
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